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Add back missing TlsAlloc() call

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Cosmopolitan Libc once called this important function although somewhere
along the way, possibly in a refactoring, it got removed and __tls_alloc
has always been zero ever since.
This commit is contained in:
Justine Tunney 2024-07-21 20:45:27 -07:00
parent e08a4cd99e
commit 5d2d9e9640
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GPG key ID: BE714B4575D6E328
5 changed files with 12 additions and 9 deletions
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2
libc/runtime/cosmo.S
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@ -45,7 +45,7 @@ cosmo: push %rbp
#endif /* SYSDEBUG */
#ifndef NOX87
// Windows always initializes FPU to douuble precision.
// Windows always initializes FPU to double precision.
// WSL breaks Linux ABI by initializing FPU to double precision.
// This code makes long double long again.
//

2
libc/runtime/enable_tls.c
View file

@ -251,6 +251,8 @@ textstartup void __enable_tls(void) {
atomic_store_explicit(&_pthread_static.ptid, tid, memory_order_release);
// ask the operating system to change the x86 segment register
if (IsWindows())
__tls_index = TlsAlloc();
__set_tls(tib);
#ifdef __x86_64__

2
libc/runtime/set_tls.c
View file

@ -38,7 +38,7 @@ dontinstrument textstartup void __set_tls(struct CosmoTib *tib) {
#ifdef __x86_64__
// ask the operating system to change the x86 segment register
if (IsWindows()) {
asm("mov\t%1,%%gs:%0" : "=m"(*((long *)0x1480 + __tls_index)) : "r"(tib));
__set_tls_win32(tib);
} else if (IsLinux()) {
sys_set_tls(ARCH_SET_GS, tib);
} else if (IsFreebsd()) {